A) 6 km/h
B) \[5\frac{1}{3}\] km/h
C) 4 km/h
D) 5 km/h
Correct Answer: D
Solution :
Let the speed of the man is x km/h and total distance to travel is y km. \[\therefore \] \[\,y=30x\] His reduced speed \[=x\times \frac{14}{15}\] \[\therefore \] Distance travelled \[=\frac{14x}{15}\times 30=28x\,\,km\] According to the questions, \[\Rightarrow \] \[30x-28x=10\Rightarrow x=5\,\,km/h\]You need to login to perform this action.
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